The How Ya Reelin Heavy-Duty Hand Crimper has hardened steel jaws with 4 crimping positions: .1–.5mm; .5–1mm; 1–2mm; and 2.2mm. The tool crimps wire and more from 50 lb.–450 lb. test and includes 2 hardened side cutters. This crimper adds cushioned non-slip grips and plated jaws for maximum saltwater resistance. Designed for use with aluminum or copper sleeves. Includes a safety and release lock. Hardened steel jaws with 4 crimping positions Crimps wire and more Cushioned non-slip grips Plated jaws for saltwater resistance